I would say 5-6 hrs max of overhead sun. Wish I knew its shade tendancies a little better, but we've been here a little over 6 weeks, and I didn't care the first couple of weeks!
I haven't seen the site, but if you want repeat bloom, I'd suggest planting rose(s) there - and yes, there are quite a few that would be satisfied with 5-6hrs of sun. Most bushes, like ornamental trees, have only one bloom period per year, i.e. forsythia (there are small varieties you can get if you don't have room), lilac and viburnmum ('snowball bush').
When we moved up here, I inherited several large shrub roses (could be small climbers if you, I dunno, I haven't ID'd them yet) that did fantastically, so I've added a few others in the last couple of years and they've almost all performed very well, also. In SoCal, the biggest problems with roses are mildew and rust (fungi) which thankfully are not a big problem up here since the climate is so dry. I do not spray my roses whatsoever. You may get a few aphids (wait until your first spring when the lady bugs swarm, you will just swoon!) a touch of mildew, but nothing to do anything about. Really all you need to do is be able to water (we are on drip) and fertilize.
You will find that established, large shrubby roses really don't require a lot of water and can be grown under drought-ish conditions, particularly IF you grow more of the old garden roses rather than conventional hybrid teas (which I was not suggesting).
This year I have jumped into the big end of the pool so to speak and gotten into old garden roses (OGRs) in a big way. If you chose carefully (and I'd be happy to help), you can have a few bushes in this spot that will fill it up well (and more if you like), repeat from spring through frost AND provide some lovely fragrance.
Some OGRs do only bloom once a year. If I had acres I'd have them, too, but I don't so I stay away from them. However, there are plenty that do, many are 'found' roses that rose rustlers have found by the wayside or in abandoned cemeteries (it used to be a custom to plant a rose at gravesides) and have temporary names like 'Grandmother's Hat' and 'Placerville White Noisette'. You know these roses are for the most part a slam dunk if they can survive for years and years without care and probably only the water that nature provides (I do plan to provide more than that, however).
I stayed away from these roses for a long time because many have long French names and I was intimidated, but I found a terrific rose forum that has educated me a lot just by my lurking. And besides having a long chain link fence to fill, I finally said to myself "Self, my name is lagomorphmom, and I will never take the time to spray my roses (not that it's an environmentally good thing anyway), so let's not kid yourself, you need to look elsewhere". So, finally, this year was it.
There are quite a few online vendors, mostly mom & pop businesses, that keep these wonderful roses in production. Sadly, many have fallen by the wayside in this recession. I chose to give my business to ones on this coast to save shipping.
One other idea to get used to is that these roses are mostly sold as 'bands' as they are started from slips. It is recommended that you place them in gallon pots for a couple of months and then set them out in the garden. I have come to embrace this form factor as 'Self' is never very prompt about planting bare root body bags from HD or where ever and thus have lost several that way and wasted a lot of money. In addition (and most importantly) you only need to dig a hole a bit larger than a gallon pot, which in WW is a GOOD thing!!!
If you want more info pm me. I'll also try to post an article soon on growing roses in drought conditions that I found very interesting.
Good luck whatever you chose!!!
